pleukharp



5 Sheets-Sheet 1.

(No Model.)

J. PLEUK'HARP. 82 W. K. LIGGETT.

HOOP MAKING MACHINE No. 501,730.; Patented July 18, 1893.

witwaooao 351;; attozmew (No Modei.) 5 Sheets-Sheet 2. J. PLEU.KHAR P'& W. K. LIGGETT.

HOOP MAKING MACHINE.

No; 501,730. PatentedJuly 18, 1893 (No Model.) I '5 Sheets-Sheet 3.

- ,J. 'PLEUKHARP& W. K, L'IGGETT.

- HOOP MAKING MACHINE. A

1 Io.501,7so.- .PatentedJu ly 18,1898.

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TATES JAMES PLEUKHARP AND VILLIAM K. LIGGETT, OF COLUMBUS, OHIO, ASSIGNORS TO THE PLEUKHARP BARREL MACHINE COMPANY.

HOOP-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent N0.'501,'730, dated July 18, 1893. Application filed September 26, 1892. Serial No. 446,937- (NO model.)

To aZZ whom it may concern:v

Be it known that we, JAMES PLEUKHARP an (1 WILLIAM K. LIGGETT, citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in HooplWIaking Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to machines for making hoops which are formed from hoop iron that is cut the required length, bent in circular form, and having the ends overlap and secured together by rivets.

The purpose of the present invention is to devise a machine for punching and riveting the overlapping ends of the hoop iron automatically and in which the jaws and die plates carrying the punching, riveting, and wire feeding mechanism will be relatively fixed as regards any longitudinal movement thereof, and which will tilt on their pivotal support only to open-and close said jaws on the overlapping ends of the hoop iron. 7

Afurther purpose of the invention is to provide simple and efficient mechanism for moving the former around which the hoop iron is bent so as to carry the overlapping ends of the hoop iron between the die plates of the jaws at the proper time and in proper position to be operated upon by the punching mechanism, receive the rivets, and upset the ends of the rivets, thereby completing the operation of riveting the overlapping ends of;

the hoop iron.

-A still further purpose of the invent-ion is to improve this class of machinery and provide a machine which will be comparatively simple in construction, effic-ient and perform the work in a rapid and satisfactory manner, and which will be durable, easily manipulated, and in which the parts are readily accessible for purposes of repair and cleaning.

The improvement consists of the combination with a pair of jaws carrying the punching, wire feeding and riveting devices, of a former to receive the hoop iron forming the hoop, and mechanism for moving said former to carry the overlapping ends of the hoop iron vbetween said jaws, whereby said overlapping ends are successively punched, receive the rivets, and have the ends of the rivets upset.

The improvement also consists in the combination with the jaws carrying the punching, riveting, and rivet feeding mechanism, of a slide to cut the rivets from a Wire and clamp said rivets until thrust into the openings in the overlapping ends of the hoop iron.

The improvement further consists of the special instrumentalities for operating the former, separating the parts or sections composing said former and returning the same to a normal position after being actuated; the provisions for adjusting the wire feeding rollers to cause them to'grip the wires with a greater-or less degree of tension; the lubricating attachment for oiling the punching device; the receptacle for receiving the cuttings; and the instrumcntalitie's for starting and stopping the machine and for actuating the jaws, and the wire feeding mechanism which will be hereinafter more fully described and claimed, and which are shown in the accompanying drawings, in which Figure 1 is a side elevation of a hoop forming machine embodying ourinvention. Fig. 2 is a front view of the said machine. Fig. 3 is a View from the rear side of the machine having a portion of the large gear wheel broken away to show the relative disposition of the rim, the pawl for locking the drive pulley to the drive shaft, and the trip which has one endin engagement with said rim and the other end constructed to engage with said pawl to release the drive pulley to permit [it to revolvefreely on the drive shaft, and shows the drive pulley and. the inner portion of the sleeve which carries said pawl in section. Fig. 4 is a vertical section of the machine looking to the right, showing the jaws and the former in central longitudinal section. Fig. 5 is a detail view of the wire feeding mechanism on a larger scale, showing a portion of the lever which carries the feed pawl in section to illustrate the relative disposition therewith of said feed pawl and its actuating spring. Fig. 6 is a detail plan View of the wire feeding mechanism, showingthe devices for relatively adjusting the feed roller. Fig. 7 is a detached view of the drive pulley looking at that sidewhieh is'providedwiththe shoulders with which the pawl engages to'lock the drive pulley and drive wheel together.

The frame of the machine which is preferably of metal, is composed of two similar side pieces A which are connected and braced by suitable cross bars. near its ends in bearings provided on the side pieces A, has a pulley O mounted and'adapted to rotate freely thereon and is provided at one end with a pinion D the sleeve (1 of which extends to and abuts against the hub of the pulley O. This pinion D and sleeve d are keyed on the said shaft B so as to revolve p it in engagement wifhthe cams 2 and 6.

therewith. A lateral extension d projecting from the sleeve d is recessed to receive an elbow shaped pawlE which is pivotally co'nnecte'd'with; the said extension d at the el bow. The horizontal member 6 of the pawl E projects away from} the pulley C and the vertical member 6 occupies a pendent posi tion and is adapted to be pressed toward the pulley C by a spring at which is fitted in recessinthe said extension (1'. The side of the pulley C facing the pawl E; has two cam faces onthe inner'per'iphery of theband, and twoshou-ldersC at points diametrical-lyopposite each other. Obviously, wh e'n the menuher a is projected within the plane of the pulley C it will be engaged by one or the other of the shoulders 0 and lock the pulley'G and shaft B so that they will revolve togeth er. An elbow shaped trip F pivotally supported at the elbowhas its horizontal ar'm f a proxi m'atel-y parallel with shaft- B' and its vertical arrn f in a plane' parallel with the pulley G. j

The rear edge of the arm f is providedwith a cam f which is eccentric to and extends about onethird way around the shaft- Band is disposed so a'sto engage with the horizontal membere and disengage the vertical mem ber e froni the pulley O. The lower end of the arm f is attached to a hand lever X which is pivoted to the frame of the machine, and extends forward so as to bewithi'n'" com venient reach of'th-e operator; By means of this leve-rt-lie trip F is made to turn on its pivot; the lower end of the vertical arm f swinging outward releasing the pawl E.

See the dotted lines in Fig; 3. The trip F may be returned to a normal position by gravity, bntto insure its-quick and positive action a' spring f 4 is provided and loc'ate'dbe tween the horizontalarm f and the frame. The shaft K parallel with the shaft- B and joiirnaled on the said side pieces A, is provided on one end by a gear wheel L which is constructedto mesh with the pinion D and which has a rim Z on its inner side to extend within the path of the free end of the arm f. This rim has adepressed portion Z which re-' ceives the end of the said arm f when the trip is in a normal position,- i. 6'. when: the machine is out of gear. During theti'ine that the machine is in gear the arm f travels upon the rim land holds the cam f out of the path of the member e of pawl E. On this shaft K bar 0 and have anti-friction rollers m and n The shaftB journaled' at their rear ends to travel on the respective cams 2 and 6, and 3 and 5. These anti-friction rollers are mounted in boxes which are 1 let into the said jaws andwhich are adjusted by means of set screws on. The rear end of the lower jaw N is held against the cams 3 and 5 by means of a spring P Theweight of the rear portion of the jaw M is sufficient to hold The wire feeding mechanism composed of grooved rollers, Q; and This carried by the lowerjaw N. These rollers are suitably mounted in the said jaw and have cog-geartogether.

ing q intermediate of their ends by means of which the said rollers are positively rotated The journal of one: of therollers is extended a ratchet wheel" S'sec'u-red therei to and a lever T mountedso as to-tur'n loosely thereon. The lever T is providedat-itslower end with a pawl: 25 fitting into a sock'etprovided therein and adapted to be engaged by a spring 8 by which it is kept in contact with the ratchet wheel S. The rod T depending i fromone end of the lever T connects with the j front end of a lever T the rear end of which is constructed to engage with the can] 1 and be operated thereby. This lever T is'piV- f ot-ally supported intermediate of its ends on aside' A- of the frame of the machine, and is provided at its inner end with an anti-frie tion roller to travel on the cam- 1 and is held against said cam bya spring t. The grooves in the rollers Q; and R, are roughened to engage the wire and the front roller Q is jour'-' naled in sliding boxes q adjusted by the set screws g by which the grip on the wire may b'ealtered or adjusted.

The formers U and V, each being semi-circular' in o'utlin'e,-are located on the front side plete circle when together. These formers are mounted on vertical guide rods W and j are connected together by toggle levers a and to',the'lever ubeing conn'ected with the'treadle by the rod UP.- The lower former V is adjustably connected with a cross head 7which is mounted on the guide rods WV and to which the toggle levers u are connected. The former V is vertically adjusted with reference to the cross head 7 by means of the set screws 11;

; of the machine and are placed to form acon1= former U is cut away to permit the free working of the lower jaw N and admit of thewire feeding mechanism being so disposed that the wire receiving space between the rollers Q and R will come directly below the wire opening in the said jaw N as shown most clearlyin Fig. 4. The vertical rods W are hinged at 10 at their lower ends to the frame of the machine, allowing an in and out or backward and for ward movement or oscillation of the hoop forming and carrying mechanism. The vertical guide rods WV are also provided with an armY extending backward and upward, and furnished with an extension y adapted to engage the grooved cam Z of the wheel L. This grooved cam Z is constructed with three concentric .arcsofdifferent radii, by the engagement with which of the extension g on the arm Y the in and outer backward and forward movement of the hoop forming and car rying device is secured.

Located between and supported by the jaws wire 14, and depressions 15, corresponding with the depressions 11, in the plate P to give the proper shape to the heads of the rivets.

The slide H moving in bearings in the jaw N, is provided at its forward end with a hardened steel plate or shearing tool h and at its farther end with an adjustable plate It adapted to engage the cam 4, by which the said slide is actuated. The plate 71/ is kept in contact with the cam 4 by means of the spring 71/ A receptacle 16. is provided in the lower jaw N to receive the cuttings from the punching tools. An oiler 17 is also provided in the upper jaw M, with an opening to convey the oil to the punchesand keep them constantly lubricated. I l

The treadle J is held and returned to a normal position after being operated by the spring J which is interposed between a lower cross bar of the frame and a depending projection of the said treadle. The set screws j are provided to regulate the tension of this spring as shown most clearly in Fig. 4.

The hoop iron, previously cut to approximately the required length, is placed. around the formers and its ends lapped. The overlapping ends being placed between the former U and thejaws S, the operator presses down on the treadle J which through rod to and the toggle levers u and 'u, separates the formers and at the sametimeliftsthem suiticiently to clamp the overlapping ends of the hoop between the upper former and the jaws. The springs 10 carrying the weight of the formers act as a yielding resistance. When the treadle is depressed the upper former will be elevated until the hoop is clamped between it and the construction provision is had to permit the overlapping ends of the hoop, to slip during the separation of the formers U and V and yet hold them with suflicient tension during the operation of punching and riveting. The hoop thus formed the size desired, and securely held in position in the machine is ready to be operated upon by the punching and I'lV- eting mechanism. The operator. now moves the lever X releasing the pawl E and permitting the same to lock the pulley O and the shaft Btogether, thereby starting the machine. The armf is held out of the path of the pawlE by the arm friding on the rim Z. The. lower jaw then comes up first with the die againstthe work and immediately after the upper jaw comes down with thepunches making theholes in the hoop. Then both jaws open simultaneously at which time the wire 14 is fed through the suitable holes in the lower jaw the re.- quired length for a rivet The, hoop holding mechanism then moves backward under, the

action of the arm Y and cam Z. At the same time, the slide ,I-I moves forward under the action of the cam 4 shearing off the wire and clamping it securely between a shoulder 19 on the die P and therend of the slide H directly beneath, the holes in the hoop., The jaws again coming together under the action of the operating cams, (2, 3, 5, 6) force the r vets up through the holes in the hoop, where they are mechanism returns to point of starting under the action of arm Y and cam Z. The arm f of trip'F drops into recess If, the machine is automatically stopped and the completed hoop is removed.

This machine is designed as an improve,-

ment on that for whichwe filed application for patent of thellnited States April 12, 1892, Serial No. 428,865. In said application the former about which the hoop iron is shaped is relatively fixed as regards the jaws, the die plates being movable to perform the operation of punching, and riveting the over-.

lapping ends of the hoop iron. The present invention differs fromthat forming the basis of the aforesaid application,Serial No. 428,865,

in the former about which the hoop iron is shaped and the mechanism for actuating the; sam e, whereby the said former is moved to: carry. the overlapping ends of the hoop iron between the jaws to be successively operated upon by the punching, and the riveting mechanism as more particularly set forth hereinbefore and pointed out in the annexed claims. The particular construction of the former, the punching and the riveting mechanism, and the instrumentalities for separating the parts of the former and starting and stopping the machine, and the wire feed- 1ng mechanism are substantially the same as that set forth in the application he'reinbefore mentioned, Serial No. 428,865, and is claimed therein.

Having thus described our invention, what we claim, and desire to secure byLetters Patent, is-- 1. In a hoop forming machine the combina-' tion with jaws provided with the punching and riveting mechanism, of a former to receive the hoop iron, and mechanism for moving said former to carry the overlapping ends of the hoop iron between the jaws to be successively operated upon by'the punching, and the riveting mechanism, substantially as set forth.

2. In a hoop forming machine the combination with jaws carrying the punching, riveting, and rivetfeeding mechanism,of aformer adapted to receive the hoop iron, and mechanism for moving said former to carry the overlapping ends of the hoop iron between said jaws to be successively punched, receive the rivets, and have the ends of the rivets upset, substantially as set forth.

3. Ina hoop forming machine'the combination with the jaws carrying the punching and rlv'eting mechanism and a wheel as L having a can't Z having portions at different radii, of a for'merhaving an arm projected therefrom, and having a portion of said arm engaging with the cam Z whereby said former is moved backward and forward to carry the hoop iron between said jaws to be successively operated upon by the punching and riveting mechanism,- substantially as set forth.

4. In a hoop forming machine the combination with the jaws-carrying the punching and riveting mechanism and a wheel L having a grooved cam Z having portions at different radii, of a pivoted former to receive the hoop iron having an arm projected therefrom and provided with a portion to engage with said grooved cam, whereby said former is rocked on its pivotal support-,- substantially as described for the purpose set forth.

I 5. In a hoop forming machine the combination with the jaws carrying the punching and riveting mechanism, and the wire feeding mechanism, of a slide constructed to sever portions from the Wire to form the rivet, and mechanism for actuating the said slide and the wire feeding mechanism, substantially as structed to sever portions from said wire to form the rivet and clamp said rivet between said s'ho'ulderp and the end of the slide, s'ubstanti ally as set forth.

7. In a hoop forming machine the combination with the jaws provided with the punching and riveting mechanism, and an actuating cam, of a slide for cutting the rivets provided with an adjustable end piece to ride upon said cam, substantially as set forth.

8. In a hoop forming machine the combination with the jaws carrying the punching and riveting mechanism a shaft provided with cams for actuating said'jaws and the wire feeding mechanism, and a wheel L mounted on said shaft and havinga rim Z which is provided with a depressed portion Z, of a-drive shaft, a drive pulley loosely mounted on said drive shaft, a pawl E carried by said drive shaft and adapted to engage with said drive pulley, a trip adapted to have one end to.

travel on the rim 1 and having its other portion provided with a cam f and a lever under the control of the operator to move said trip and project the camportion f within the path of a portion of the pawl E, substantially as and for the purpose setforth.

9. In a hoop forming machine the combination with the jaws carrying the punching and riveting mechanism, feed rollers Q and R, and

a shaft provided with a series of independent cams for actuating said jaws andthe feed rollers, of a ratchet wheel S on the journal of one of said rollers, lever T loosely mounted on the journal and provided in one end with a socket, a spring actuated pawl located in the said socket to engage with said ratchet wheel, lever T pivoted between its ends, one end being constructed to engage with one of the said cams, and having the other end connected with the lever T, and a spring t for maintaining the free end of the lever T in engagement with the actuating cam, substantially as set forth.

10. In a hoop forming machine the c'oinbina tion with the jaws carrying the punching and riveting mechanism, of wire feeding rollers located in one of said jaws, adjustable bearings for one of said rollers, and set screws for adjusting said bearings to vary the distance between said rollers, substantially as set forth.

11. In ahoop forming machine, the combination of the jaws M and N carrying the punching mechanism, the jaw N having receptacle 1.6 projected forwardly therefrom and communicatingwith the opening through which the cuttings escape, to receive the said outtings and the lubricant, and a lubricator to automatically supply oil to the punching mechanism, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses. v 7

JAMES PLEUKHARP. WILLIAM K. LIGGETT. Witnesses:

J. E. SATER, MAY MASON. 

